View sorting
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Key: COUCHDB-415
URL: https://issues.apache.org/jira/browse/COUCHDB-415
Project: CouchDB
Issue Type: Wish
Affects Versions: 0.9
Reporter: Nils Breunese
I'd like to be able to sort the output of a view. I have a view that generates
a list of event objects with start and end timestamps (and some other data). I
emit this data using the end timestamp as the key, because that is what I want
to use for my ?startkey=... query. But I'd like the results to be sorted by the
start timestamp. I understand this is not currently possible using regular
CouchDB views.
The CouchDB Users mailinglist suggested to use couchdb-lucene, as that does
offer the option to sort on any indexed field. I'm trying that route now, but
it feels like overkill to add a full-text indexer to CouchDB just to be able to
sort the output of my view.
Some soundbites from the IRC channel when I brought this up:
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<rnewson> breun: jan___: in this case the data to sort on is known at map time,
so an extension to emit to support multiple keys (with separate btrees) would
do it. not sure how much effort that is, though.
<rnewson> sorting at query time feels infeasible.
<jan____> rnewson: I think davisp had something like that working back in the
day. i.e. alternate sort oder. davisp?
<rnewson> jan___: I missed that, but it sounds reasonable at emit time.
<davisp> I think its this one:
http://github.com/davisp/couchdb-old-patches/tree/view-sort
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I would love to have view sorting native in CouchDB.
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